Shaping tool for saw teeth



Nov. 22, 1938,

Filed June 20, 1936 Patented Nov. 22, 1938 a it 2,137,225-

UNITED STATES PATENT OFFICE SHAPING TooL Foitsaw TEETH George Bodenhamerg Klamath Falls. Oregi A Application June 7 2t, 1936, f Serial "No.8 6, 386 4' Claims. 01. 76- -53) This invention relates to shaping tools for contacts the teeth l2. Screws l3 position the shaping the points of the teeth .on saws, and is stop-bar 4 relative to'the saw teeth I2. An adparticularly adapted to be used on band saws justing screw 14 is provided for adjusting the as commonly used in saw.mills and the like. end: H of'the tool rest bar 4 to. position the teeth The primary object of the invention is to prorelative to the dies [5 and I6. Guide plates ll vide a method of changing the shape or. the and i8 position 'the tool relative to the saw. The teeth by rotating the dies Within the shaping tool plate [1 isirigidly fixed to the end of the body to'difierent positions, thereby changing or creatportion 4 by the screws W. The plate I8 is tening different shaped teeth. sioned againstithe saw 3 at 2! by the springs 2!] 10 xAnother object of this invention is to chang associat'edwith the screw 22. The plate l8 has 10 the shape of the teeth without having to remove slots 23 looselyfitting underneath'thescrews 24 the dies from theshaping tool. permitting free movement of the plate I8. Due A further object of the invention is to provide to the construction and operation ofthe guide a locking clamp for clamping the tool relative to plates i and, l8it is'easy to place'the tool on IS the saw tooth, automatically afterthe tool has the saw after which it is held with a snug sliding beenpositioned'relative to the tooth. fit relative to the saw. Similar guides 25 and A still further object of thisfinvention is to tem ou t Within the l l sitejend of the provide a one piece tooth stop and rest that can Slot The guide 26 is fiXedly adjustable y the be readily adjustedto the proper position and screw 21 while the guide 25 is tensioned against constructed of a material that will withstand e aw y e Spring 23 forcing the me tO- the wear developed by the saw. I wards the saw" The shoulder screw 29 retains These and incidental objects will be'apparent Clamp/in DOSitiOh allOWihg e t 39 t0 in'the drawing, specification and claims to fol- W rk fr ly e u r. A r he h p r'ha low. been placed as shown in Figures 1, 2 and 3, the Referring to the drawing: handle 3|" will be in position as shown by the 25 Figure 1 is one of my new and improved tooth dotted-111165111 Figure 1 and y pullin t Same shapers, shown mounted upon asaw. to the right it will clamp the shaper solidly to Figure 2 is a plan view of- Figure 1, partially the saw in its first initial travel by the following broken away, for convenience of illustratiom described mec anism- 30 Figure 3 is a sectional side View taken on line A centering screw or anvil s p man nt y 3 3-3 of Figure 2, looking in the direction indiadjusted-T r -J v n a Coarse hated, A f a thread, is-revolved by the initial travel of the I Figure 4 i an d. i of t guide ar a s handle 3! "by-the action of the crank 34 being ment used for guiding the shaper alongthesaw, revolved hythe Connecting rod having it 35 the same being taken on 1ine'44 of Figure 1. e end iournaled n e crank 34 t 36 and 35 Figure 5 is a sectional view of a spring tension Opposite end p through the Wrist p n 3? guide arrangement taken on line 5 5 of Figure 1 which is pivotally IllOllIitQ-d at 38 within the arm Figure 6 is a fragmentary sectional side view of 39 0f the handle A p g 0 which is adone of the dies used for shaping the teeth. lvllstable y the adjustment f ces the con- 40 Figure '7 is an end view of one ofthe dies showfleeting rod- 35 agai s e crank 34 revolving 40 ing'the face of the die. e j 33 and Clamping e saw at 42. This Figure 8 is a lay-out of different shaped teeth pr any movement of the Shape! When p esthat may be made with this shaper by simply resure is a i to the dies and It in the lvolving the dies within the shaper. lowing ne In the drawing: The handle 3! is fixedly mounted to the screw- 45 The body of the shaper is indicated by numeral jacks 44 and 45 y the arms 9 and 43. The arm I, having a longitudinal slot 2 for receiving the 39 is slidably p t o ed at 46 Within the handle saw 3. A tooth stop and tool rest 4 is pivotally t0 eempensate for the a of the screw-jacks mounted to the adjustable bracket 5 by the pin 44 and 45 working within the bracket arms 41 6. The bracket 5 is adjustablelongitudinally of and 48. Referring to Figure 6,'the die 15 is slidthe body I by loosening the screw I working ably mounted within the threaded sleeve 49. The within the slot 8 and positioning the screw 9 sleeve 49 is clamped within the bracket 50 by the which bears against the end of the body portion screws 5| with sufficient snugness to prevent the at In. The screw 9 absorbs the shock andaseasy turning of the sleeve. The outward end of 5. sures permanent positioningof the stop as it the sleeve has slots 52 for co-acting with the 55 lit lever 53, which is fixedly mounted within the die l5. The spring 54 tends to force the die l5 out of engagement with the saw 2 when the screwjacks 44 and 45 are revolved within the brackets 41 and 48 backing them 01f away from the ends 55 of the dies.

In order to change the shape of the teeth the levers 53 are revolved to different positions changing the relation of the die faces 51 relative to the saw teeth, after these dies have been revolved to the proper position the pulling down of a handle 3!, from the dotted position in Figure 1, will force the screw-jacks 44 and 45 inwardly against the ends 56 of the dies l5 and I6 forcing them together against the saw tooth as shown at 58. An adjustable stop screw 59 limits the amount of travel of the handle 3| and the space between the ends of the dies when they are brought together.

As stated before the main object of this invention is to provide a saw shaper that will make different shaped tooth points without removing the shaping dies from the shaper, and I do not Wish to be limited to the particular form of embodiment just described as my invention may take other forms of embodiment still coming within the scope of the claims to follow.

I claim:

1. A tool for shaping saw teeth comprising a grooved body, a member seating within the groove and connected to the body by a pivotal connection adjustable longitudinally of the body, threaded members threaded into the body for positioning the member laterally of the groove, means for laterally positioning the body upon a saw, sleeves threaded in opposite sides of the body, dies slidably mounted withinthe sleeves, said dieseach having a plurality of different faces, levers for turning the dies so that corresponding faces engage a saw tooth, the sleeves having notches slidably seated.

2. A tool for shaping saw teeth comprising a grooved body, a member seating within the groove and pivotally connected at one end to the body and forming a rest for seating the body upon the teeth of a saw, means providing for lateral positioning of the body upon a saw, sleeves threaded in opposite sides of the body, dies slidably mounted within the sleeves, brackets at opposite sides of the body, threaded members in the brackets engaging and operating the dies, a pair of arms for operating the threaded members, one of the arms being provided with an operating handle within which the free end of the arm is slidably seated, a stationary member engaging one side of the saw blade, a threaded member for engaging the opposite side, a crank attached to the end of the last member, a rod having one end pivotally connected to the crank, a wrist pin mounted to one of the arms through which the rod passes, a member threaded upon the rod, and a spring between the wrist pin and the member threaded to the rodoperating when the handle is moved in a direction to cause the dies to engage a saw tooth the last mentioned threaded member to grip the saw blade between it and the stationary member.

3. A tool for shaping saw teeth comprising a body provided with a groove to receive the toothed edge of a saw, dies mounted at one end thereof movable to engage opposite sides of a saw tooth including means for operating said dies, a bracket mounted at the opposite end of the body, means for adjustably positioning the bracket longitudinally of the body, a bar seated in the groove having one end pivotally connected to the bracket and adapted to rest upon the teeth of a saw, and a member threading through the top of the body and engaging the bar proximate its free end and raising and lowering the body thereabove and thereby raising and lowering the dies relative to the teeth.

4; A tool for shaping saw teeth, comprising a body constructed to seat upon the toothed edge of asaw, dies slidable toengage opposite sides of a saw tooth, an operating lever for operating the dies, and means for gripping the saw blade when the dies are operated comprising a stationary though adjustable screw member engaging one face of the saw blade, a second screw member engaging the opposite side of the blade, a

connection between the second screw member and the operating lever for moving it by means 1 of its threads toward and from the first screw accordingly as the dies engage and disengage a saw tooth, said connection comprising a wrist pin pivotally mounted upon the operating lever, a crank mounted upon the second screw memher, an arm having one end pivoted to the crank and. passing through the wrist pin, a spring coiled about the arm between the wrist pin and crank and having one end bearing upon the Wristpin, and a member adjustable along the arm upon which the other end of the spring bears. 55

GEORGE E. BODENHAMER. 

